图像选择器库不适用于 Flutter 应用程序

如何解决图像选择器库不适用于 Flutter 应用程序

我正在尝试为我的 Flutter 应用程序添加一个图像选择器包，但它不起作用，它还显示构建 gradle 无法构建。 我读过它与本机应用程序操作系统有关，它必须具有最新版本和最新版本的成绩库才能工作， 我已经使用最短的解决方案解决了这个问题，我已经将图像选择器版本降级到 ^0.5.4+1 模拟器启动但无法从相机中拾取图像，未显示预览图像。

   image picker: ^0.5.4+1

 

     dependencies {
            classpath 'com.android.tools.build:gradle:3.6.0'
            classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        }

    distributionBase=GRADLE_USER_HOME
    distributionPath=wrapper/dists
    zipStoreBase=GRADLE_USER_HOME
    zipStorePath=wrapper/dists
    distributionUrl=https\://services.gradle.org/distributions/gradle-6.0.1-all.zip


W/Binder  ( 7322): Caught a RuntimeException from the binder stub implementation.
W/Binder  ( 7322): java.lang.RuntimeException: Methods marked with @UiThread must be executed on the main thread. Current thread: Binder:7322_2
W/Binder  ( 7322):  at io.flutter.embedding.engine.FlutterJNI.ensureRunningOnMainThread(FlutterJNI.java:781)
W/Binder  ( 7322):  at io.flutter.embedding.engine.FlutterJNI.invokePlatformMessageResponseCallback(FlutterJNI.java:718)
W/Binder  ( 7322):  at io.flutter.embedding.engine.dart.DartMessenger$Reply.reply(DartMessenger.java:144)
W/Binder  ( 7322):  at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler$1.success(MethodChannel.java:231)
W/Binder  ( 7322):  at io.flutter.plugins.imagepicker.ImagePickerDelegate.finishWithSuccess(ImagePickerDelegate.java:540)
W/Binder  ( 7322):  at io.flutter.plugins.imagepicker.ImagePickerDelegate.handleImageResult(ImagePickerDelegate.java:505)
W/Binder  ( 7322):  at io.flutter.plugins.imagepicker.ImagePickerDelegate.access$000(ImagePickerDelegate.java:66)
W/Binder  ( 7322):  at io.flutter.plugins.imagepicker.ImagePickerDelegate$4.onPathReady(ImagePickerDelegate.java:470)
W/Binder  ( 7322):  at io.flutter.plugins.imagepicker.ImagePickerDelegate$3$1.onScanCompleted(ImagePickerDelegate.java:160)
W/Binder  ( 7322):  at android.media.MediaScannerConnection$ClientProxy.onScanCompleted(MediaScannerConnection.java:204)
W/Binder  ( 7322):  at android.media.MediaScannerConnection$1.scanCompleted(MediaScannerConnection.java:53)
W/Binder  ( 7322):  at android.media.IMediaScannerListener$Stub.onTransact(IMediaScannerListener.java:61)
W/Binder  ( 7322):  at android.os.Binder.execTransact(Binder.java:731)

我写的代码是：

import 'dart:io';

import 'package:flutter/material.dart';
// import 'package:image_picker/image_picker.dart';
import 'package:image_picker/image_picker.dart';
import 'package:path/path.dart' as path;
// import 'package:path_provider/path_provider.dart' as syspaths;

class ImageInput extends StatefulWidget {
  @override
  _ImageInputState createState() => _ImageInputState();
}

class _ImageInputState extends State<ImageInput> {
  File _storedImage;

  Future<void> _takePicture() async {
    final imageFile = await ImagePicker.pickImage(
      source: ImageSource.camera,maxWidth: 600,);

    setState(() {
      _storedImage = imageFile;
    });
    // final appDir = await syspaths.getApplicationDocumentsDirectory();
    // final fileName = path.basename(imageFile.path);
    // final savedImage = await imageFile.copy('${appDir.path}/$fileName');
    print("_storedImage${_storedImage.path}");
  }

  @override
  Widget build(BuildContext context) {
    return Row(
      children: <Widget>[
        Expanded(
          child: Container(
            width: 150,height: 100,decoration: BoxDecoration(
              border: Border.all(width: 1,color: Colors.grey),),child: _storedImage != null
                ? Image.file(
                    _storedImage,fit: BoxFit.cover,width: double.infinity,)
                : Text(
                    'No Image Taken',textAlign: TextAlign.center,alignment: Alignment.center,// SizedBox(
        //   width: 10,// ),Expanded(
          child: FlatButton.icon(
            icon: Icon(Icons.camera),label: Text('Upload'),textColor: Theme.of(context).primaryColor,onPressed: _takePicture,],);
  }
}

我尝试将图像选择器包更新到 ^0.6.0+10 出现了另一个错误：

C:\Users\ASUS\Desktop\flutter\.pub-cache\hosted\pub.dartlang.org\flutter_plugin_android_lifecycle-1.0.11\android\src\main\java\io\flutter\embedding\engine\plugins\lifecycle\FlutterLifecycleAdapter.java:8: error: package androidx.lifecycle does not exist
import androidx.lifecycle.Lifecycle;
                         ^
C:\Users\ASUS\Desktop\flutter\.pub-cache\hosted\pub.dartlang.org\flutter_plugin_android_lifecycle-1.0.11\android\src\main\java\io\flutter\embedding\engine\plugins\lifecycle\FlutterLifecycleAdapter.java:22: error: cannot find symbol
  public static Lifecycle getActivityLifecycle(
                ^
  symbol:   class Lifecycle
  location: class FlutterLifecycleAdapter
2 errors

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':compileReleaseJavaWithJavac'.
> Compilation failed; see the compiler error output for details.